Extra High-Tensile Bolt with Nut M14x1.5 - Part Number: 18030-1450

The Bolt with Nut Fastening Set (part number 18030-1450, property class 12.9, metric fine pitch M14 × 1.5, total underhead length L = 50 mm, thread length G = 26 mm, unthreaded shoulder 24 mm, standard requirement 2 bolts per blade) is an ultra-high tensile structural fastener assembly engineered for soil cultivation machinery. Designed to withstand severe shear loads, high tensile stresses, and persistent rotational vibrations across rotary tillers, power harrows, and mulcher rotors.

Key Features & Benefits

• Maximum Property Class 12.9: Quenched and tempered from high-performance alloy steel, delivering a nominal tensile strength of 1200 N/mm² and yield point of 1080 N/mm² to prevent bolt elongation, shear deformation, and brittle fractures during rocky soil impact.
• Metric Fine Thread Pitch (M14 × 1.5): The fine 1.5 mm pitch provides superior self-locking resistance against persistent working vibrations compared to coarse threads, ensuring consistent preload retention and clamping force.
• Precision 24 mm Unthreaded Solid Shank: Keeps the critical shear boundary between the blade and mounting flange completely on the solid unthreaded body, preventing notch stress concentrations on the thread and eliminating mounting hole elongation.
• Supplied Complete with Matched Nut: Paired with an extra high-strength matching nut suited for class 12.9 torque specifications, optimized for standard dual-bolt tine installations (typically 2 sets per blade).

Technical Specifications

Typical Application Scopes

Installation Technical Note: As a property class 12.9 structural fastener with M14x1.5 fine pitch, tighten using a calibrated torque wrench (recommended dry torque: approximately 200 – 220 Nm, unless otherwise indicated by the implement OEM). Check hardware torque after the initial hour of field operation.